Engine-governor



PATENTED JAN. 26, 1904.

0. HOVE.

ENGINE GOVERNOR.

APPLIUATI-ON FILED AUG, 20, 1903.

N0 MODEL,

Witnesses 5/ a%m Attomzy UNITED STATES Iatented January 26, 1904.

OLE HOVE, OF ELLSWVORTH, WISCONSIN.

ENGINE-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 750,649, dated January26, 1904.

Application filed August 20, 1903.

To all whom it may concern.-

Be it known that I, OLE Hov'E, a citizen of the United States, residingat Ellsworth, in the county of Pierce and State of lVisconsin, haveinvented certain new and useful Improvements in Engine-Governors; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to engine-governors; and it consists in certain newand useful improvements upon the governor described in Patent No. 720,432, issued to me February 10, 1903. The governor disclosed in saidpatent is designed more particularly for use in connection with enginesto which steam is supplied continuously without cut-off, and theconstruction of said governor is such that when the engine is workingunder a heavy load the valve will automatically raise to allow of thepassage of a greater amount of steam to the engine to keep up the speedand when a part or the entire load is removed from the engine the valvewill be lowered to reduce the steam-supply to the engine. In otherwords, the valve in said governor is automatically controlled by theload upon the engine or by the steam-pressure in the same.

One object of the present invention is to provide means for mechanicallyoperating the governor-valve to 'vary the speed of the engine, whichmeans shall be independent of its automatic operation.

Another object is to provide automatic means for opening and closingsaid valve, according to the variation of the steam-pressure in theboiler.

Another object is to provide means for adapting the governor for use inconnection with single-acting reciprocating engines.

A further object is to provide a governor of this character which issimple in construction, comparatively inexpensive to manufacture,durable in use, and eflficient in operation.

With these and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,as will be more fully described, and

Serial No. 170,209. (No model.)

particularly In the accompanying drawings, Figure 1 is a perspectiveview of my improved governor. Fig. 2 is a vertical sectional viewthrough the same. Fig. 3 is a horizontal sectional view on line 3 3 ofFig. 2.

Referring to the drawings by numerals, 1 denotes a casing formed with avertical cylindrical bore 2, which forms a valve-chamber, a semi-annularequalizingchamber 3 about said bore, and a standard 4 having at itsupper end a nut 5, which is alined with the bore 2. Said casing isformed at one side with a steam-inlet through which steam is admittedinto the equalizing-chamber and which is in the form of a nipple6,"having exterior screwthreads 7 and interior screw-threads 8, providedfor a purpose hereinafter explained. Said equalizing-chamber is incommunication with the upper portion of the bore 2 through twodiametrically opposite openings or ports 9, and the lower end 10 of saidbore forms an outlet-port, which is adapted to be placed incommunication with the engine.

Mounted both to rotate and to reciprocate in the upper portion of thebore or valvechamber 2 is the governor-valve 11, which is adapted toopen and close the openings or ports 9. Said valve is in the form of asolid piston provided with steam-packing 12 and formed with twodiametrically opposite depending lugs 13, which are each slightlygreater in width than said ports 9. It will be seen that when the valveis lowered sufliciently the ports 9 will be closed by the solid upperportion of the valve and when the same is raised and properly rotatedthe lugs 13 will close or partially close said ports 9 to regulate thepassage of steam through the governor. Said valve is also formed with avertical stem 14, the reduced upper end of which projects through ahandwheel 15, having a hub 16, which has a screwthreaded engagement withthe not 5. Said hub 16 is recessed, as shown at 17, to receive the upperend of a coil-spring 18, which surrounds said stem and has its lower endbearing upon the top of said valve to force the same down to its closedposition. The downward movement i of said valve under the action of thisspring is limited by a transverse pin 19, which projects through theupper portion of said valve and is adapted to engage the top of thecasing. A shoulder 20, formed by reducing the upper end of the stem,limits the upward movement of the valve. As inmy former patent, thevalve 11 after it has been raised to open ports 9 will have a freereciprocating movement under the varying action of steam-pressure andthe load upon the engine. By operating the hand-wheel 15 the tension ofthe spring may be varied in order to increase or decrease thesensitiveness of said valve; but said spring should not be compressed tosuch a degree that said valve will be prevented from acting under thelightest load.

In order to quickly vary the speed of the engine mechanically at thewill of the operator and without altering the tension of the spring 18upon the valve, I rotate the valve to move the lugs 13 over the ports 9,and thus vary the amount of steam passing through them. I accomplishthis by loosely securing one end of an operating-rod 21 in one end ofthe transverse pin 19, which limits the downward movement of the valve.As clearly shown in Figs. 1 and 3, the movement of this rod or link willrotate said valve, and it will be seen that the rotary movement of thesame will in no way interfere with its reciprocating or slidingmovement.

In order to compensate for the variation of the steam-pressure in theboiler and to supply the same amount of steam to the engine to maintaina steady speed, I provide means for automatically operating the rod orlink 21 to rotate the valve 11. Said means comprises a plate 22, whichmay be secured by bolts 23 to a suitable supporting-bracket (not shown)and which is formed at one end with a cylindrical chamber 21, in which asliding piston 25 is mounted. The space in the chamber in rear of saidpiston is in communication with the steam-space of the boiler through apipe 26, and the front or outer end of said piston engages a spring 27,one end of which is secured upon said plate 22 by passing the same undera yoke 28 and through a lug 29. The free end of said spring is providedwith a series of pins or studs 30, formed by cutting away a portion ofsaid end, and the free end of said rod or link 21 is formed with aseries of apertures 31, one of which is adapted to be engaged with oneof said pins 30. By this construction it will be seen that the rise andfall of steampressure within the boiler will reciprocate the piston 25,which will in turn actuate the spring 27 to move the rod 21 and rotatethe valve 11. By providing the adjustable connection between thevalve-operating rod 21 and the spring 27 the degree of rotation of saidvalve may be varied, as will be readily understood.

Then my governor is used in connection with double-cylinder, rotary, orother types of engines to which steam is supplied continuously withoutcut-off, the steam-supply pipe (not illustrated) is screwed into thescrewthreads 8 in the nipple 6; 'but when it is desired to use the sameupon single-acting reciprocating engines I provide a valve-casing 33,which I screw upon the threaded portion 7 of said nipple 6 and which isformed with a valve-seat 3 1. A rotary or butterfly valve 35 is adaptedto coact with said seat to open and close the steam-passage through saidcasing. The steam-supply pipe is screwed into a threaded opening 36 inthe end of said casing, and the shaft of the valve 35 is provided with acrank 3'7, which is connected by a rod 38 to the valve-gear of theengine. The operation of this valve is such that the same is closed toprevent the passage of steam whenever the cut-off valve of the engineoverlaps both ports.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A governor-valve having reciprocatory motion under the varyingengine-pressure and rotary motion under the varying boiler-pressure, andmeans for effecting said motions, substantially as described.

2. In a governor, the combination with a casing having inlet and outletports, of a valve having reciprocatory motion to vary the inlet of steamto the engine under the varying engine-pressure, and means for manuallyrotating said valve to vary the inlet of steam to the engine,substantially as described.

3. In a governor, the combination with a casing having inlet and outletports, of a valve having reciprocatory motion to vary the inlet of steamto the engine under the varying engine-pressure, means for rotating saidvalve to vary the inlet of steam to the engine, and an adjustableconnection between said means and said valve whereby the movements ofsaid connected parts may be varied, substantially as described.

1. In a governor, the combination with a casing having inlet and outletports, of a valve having reciprocatory motion to vary the inlet of steamto the engine under the varying engine-pressure, and means for rotatingsaid valve to vary the inlet of steam to the engine, substantially asdescribed.

5. In a governor, the combination with a casing having inlet and outletports, a valvechamber, an equalizing-chamber, and ports aifordingcommunication between said chambers, of a rotary reciprocatory valve insaid valve-chamber adapted to close said communicating ports by itsreciprocatory motion and provided with lugs adapted to close saidcommunicating ports by its rotary motion, means for reciprocating saidvalve, and means for rotating said valve, substantially as described.

6. In a governor, the combination with a casing having inlet and outletports, a valvechamber, an equalizing-chamber, and ports affordingcommunication between said chambers, of a rotary reoiprocatory valve insaid valve-chamber adapted to close said communicating ports by itsreciprocatory motion and provided with lugs adapted to close saidcommunicating ports by its rotary motion, a spring for actuating saidvalve against the enginepressure, means for adjusting the tension ofsaid spring, a stem for said valve adapted to limit its upward movement,a cross-pin carried by said valve and adapted to limit the downwardmovement of the same, and an operating-rod connected to said pin wherebysaid Valve may be manually rotated, substantially as described.

7. In a governor, the combination with a casing having inlet and outletports, a valvechamber, an equalizing-chamber, and ports affordingcommunication between said chambers, of a rotary reciprocatory valve insaid valve-chamber adapted to close said communicating ports by itsreciprocatory motion and provided with lugs adapted to close saidcommunicating ports by its rotary motion, a spring for actuating saidvalve against the enginepressure, means for adjusting the tension ofsaid spring, a stem for said valve adapted to limit its upward movement,a cross-pin carried by said valve and adapted to limit the downwardmovement of the same, an operating-rod, and means for automaticallyoperating said rod upon the variation of the boilerpressure,substantially as described.

8. The combination with a governor having a valve for controlling theinlet of steam to an engine, of an operating-rod connected to saidvalve, a cylinder having connection with the steam-space of a boiler, apiston in said cylinder, and a rod connected to said operating-rod andactuated by said piston, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

OLE HOVE.

Witnesses:

P. A. HAESSLY, F. B. WHITE.

